At first, it looked like Quazi Nafis, the man accused of plotting to blow up the Federal Reserve in New York, had only the help of the FBI in allegedly delivering a van full of what he thought were explosives to the door of the downtown building. But on Thursday authorities said he had an accomplice, who also just happens to be an alleged child pornography fan. There are some legitimate questions to ask about the ethics of helping someone hatch a terrorist plot just to bust him for it, as apparently happened with Nafis. But the whole child porn thing is more cut and dry, although it's basically a side effect of the terrorism investigation.